class Student:
    def __init__(self,**kwargs):
        self.no = kwargs['no']
        self.name = kwargs['name']
        self.age = kwargs['age']
        self.gender = kwargs['gender']
        if(kwargs.get('test')):
            self.test = kwargs['test']
        else:
            self.test = ''

    def show(self):
        print(f"no:{self.no}\tname:{self.name}\tage:{self.age}\tgender:{self.gender}\ttest:{self.test}")